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References: [ +from:kamham69@gmail.com: 29 ]

Total 29 documents matching your query.

21. Re: [TowerTalk] Rohn 25 for 80m vertical? (score: 1)
Author: Tom Haavisto <kamham69@gmail.com>
Date: Wed, 23 Dec 2009 08:04:57 -0500
Hi Marty I just built a tower out of Radio Shack TV tower - 8 inch face. I used 50 feet of tower with a 15 foot piece of aluminum tubing out the top, and it is a bit on the short side - I figure anot
/archives//html/Towertalk/2009-12/msg00244.html (8,368 bytes)

22. Re: [TowerTalk] Coax Question (score: 1)
Author: Tom Haavisto <kamham69@gmail.com>
Date: Tue, 13 Apr 2010 06:47:57 -0400
As other have indicated, not a good idea. One thing I would also add though - 5 db of loss in your cable on the TX side also means 5 db of loss on the RX side as well.... Best to try and get your cab
/archives//html/Towertalk/2010-04/msg00340.html (9,782 bytes)

23. Re: [TowerTalk] 75ohm cable (score: 1)
Author: Tom Haavisto <kamham69@gmail.com>
Date: Mon, 19 Jul 2010 19:27:54 -0400
This is how to match 50 to 75 ohm, and then back again. Single band only http://www.k1ttt.net/technote/matching.html#sixth Tom - VE3CX _______________________________________________ ________________
/archives//html/Towertalk/2010-07/msg00391.html (8,557 bytes)

24. Re: [TowerTalk] 80-m. Inverted Vee vs. Dipole Performance (score: 1)
Author: Tom Haavisto <kamham69@gmail.com>
Date: Wed, 15 Sep 2010 11:53:56 -0400
I have an inverted vee installed on a 48 foot tower - apex is around 45 feet. On another (64 foot) tower, I have 2 half-slopers - one for phone, one for CW. I have found the half-slopers work very we
/archives//html/Towertalk/2010-09/msg00336.html (11,089 bytes)

25. Re: [TowerTalk] 80-m. Inverted Vee vs. Dipole Performance (score: 1)
Author: Tom Haavisto <kamham69@gmail.com>
Date: Wed, 15 Sep 2010 12:39:11 -0400
Take a 1/4 wave length of wire (half an inverted vee), and connect the hot side of the coax to this. Shield from the coax is attached to the tower. Signal is vertically polarized, and may show a smal
/archives//html/Towertalk/2010-09/msg00338.html (13,697 bytes)

26. Re: [TowerTalk] 80-m. Inverted Vee vs. Dipole Performance (score: 1)
Author: Tom Haavisto <kamham69@gmail.com>
Date: Wed, 15 Sep 2010 13:58:31 -0400
I have built several antennas that I thought should work well, and did not. What I like to do is have 2 or 3 antennas, and compare performance over a period of time (ie a winter/contest season). The
/archives//html/Towertalk/2010-09/msg00344.html (10,910 bytes)

27. Re: [TowerTalk] 205BA vs 205CA (score: 1)
Author: Tom Haavisto <kamham69@gmail.com>
Date: Sat, 11 Dec 2010 15:03:47 -0500
Hi Neil They are the same antenna. The 205BA is the older version, and has the screw & clamp style clamps to hold the elements together. They tend to rust and break. The 205CA has stainless hoseclamp
/archives//html/Towertalk/2010-12/msg00231.html (8,116 bytes)

28. Re: [TowerTalk] Close call with death (score: 1)
Author: Tom Haavisto <kamham69@gmail.com>
Date: Sat, 15 Jan 2011 18:49:34 -0500
Along the same lines: A friend installed a self-supporting tower in his back yard - concrete base went down 4 feet. A few years later, his power went out. Everyone else in the neighbourhood was fine.
/archives//html/Towertalk/2011-01/msg00232.html (9,637 bytes)

29. Re: [TowerTalk] Tower Legs in Concrete (score: 1)
Author: Tom Haavisto <kamham69@gmail.com>
Date: Wed, 6 Jul 2011 10:09:55 -0400
Think of a Rohn BX tower - same thing. If the tower is taken down/removed, only the stubs stick out of the concrete, and get left behind. Its a taper tower. By purchasing new legs, the tower can be i
/archives//html/Towertalk/2011-07/msg00093.html (8,985 bytes)


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